Carbohydrates are polymers formed of structural units called:
A. nucleotides.
B. amino acids.
C. monosaccharides.
D. fatty acids.
E. glycerols.
Answer: C
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To analyze genetic variation in populations, one approach is to consider the frequency of alleles. When calculating an allele frequency for a diploid species, how many alleles are present for each gene?
A. 1 B. 2 C. 4 D. 4 E. It depends on whether the individual is heterozygous or homozygous.
Imagine that a mutant mouse has a defect in the distribution of norepinephrine receptors, so that all the arteries and arterioles carry the type of norepinephrine receptor normally found around the brain and heart. What would you predict for this mouse in response to hemorrhage?
A. Blood vessels near the brain and heart will constrict, while blood vessels elsewhere will be dilated. B. Vasoconstriction near the brain and heart will prevent enough blood from reaching those organs. C. Blood vessels near the brain and heart will be dilated, while blood vessels elsewhere will constrict. D. Vessels throughout the body will stay dilated, resulting in inadequate blood flow to the brain and heart.
For a given protein, hydrogen bonds can form between which of the following?
A.) atoms in the polypeptide backbone B.) atoms of two peptide bonds C.) atoms in two side chains D.) a side chain and water E.) all of the above F.) none of the above
Seven pairs of ribs articulate ________ with the sternum.
Fill in the blank(s) with the appropriate word(s).